Behavior of Steel Fiber-Reinforced High-Strength Concrete Columns under Different Loads

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Behavior of Steel Fiber-Reinforced High-Strength Concrete Columns under Different Loads

Author(s): Muhammad N. S. Hadi, Emdad K. Z. Balanji, and M. Neaz Sheikh

Publication: Structural Journal

Volume: 114

Issue: 04

Appears on pages(s): 815-826

Keywords: columns; ductility; eccentric loads; high-strength concrete; steel fibers; strength

Date: 7/1/2017

Abstract:
This paper reports the results of an experimental investigation program on the behavior of high-strength concrete (HSC) columns reinforced with micro, macro, and hybrid steel fibers. The specimens were tested under concentric, 25 and 50 mm (0.98 and 1.96 in.) eccentric axial and four-point bending. The main variables were the type, volume content and aspect ratio of steel fibers. Sixteen circular specimens of 205 mm (8.07 in.) diameter and 800 mm (31.49 in.) height were cast and tested. The specimens were reinforced with the same amount of longitudinal and helical steel reinforcements. It was found that the inclusion of either micro or hybrid steel fibers into HSC enhanced the strength and ductility of the specimens under eccentric axial loads. The results also showed that the addition of macro steel fibers into HSC enhanced the ductility but reduced the strength of the specimens compared to the specimens without steel fibers.